SECTION21—GASOLINEVEHICLE-FUELSYSTEM
21
GasolineVehicle-FuelSystem
DANGER
•SeeGeneralWarningsonpage1-2.
WARNING
•SeeGeneralWarningsonpage1-2.
•Fuelmaybeunderpressure.Useextremecautionwhendisconnectingfuellinetopreventthesprayof
fuelontohotengine.SeeRelievingFuelPressureonpage21-4.
•TopreventdamagetotheECU,nevermixtheblackandgrayconnectorsthatattachtoit.Theblack
connectoristetheredtotheECUmountingplatetohelppreventaccidentallyinstallingitinthegray
port.
GENERALINFORMATION
Theengineisequippedwithathrottlebody/fuelinjectorassemblythatiscontrolledbyanECUandrequiresno
adjustment.TheECUmonitorsengineconditionsthroughinputsfromaManifoldAbsolutePressure(MAP)sensor,
engineblocktemperaturesensorandignitiontiming.
EFISYSTEMFEATURES/SPECIFICATIONS
NOTE:ThismanualcoversECUsoftwareversionF6i33051.
•TheECUandthrottlebody/fuelinjectorassemblyarematchedpairsandarenotavailableseparately
•FuelpumpandlowoilwarninglightoperatesforafewsecondswhenkeyswitchisturnedtotheONposition;it
stopsifnoengineRPMisdetectedbytheECU
•TheECUblinksfaultcodesthroughtheLowOilWarningLamp
•In-tankfuelpump
•Return-lesssystem
•Highfuelpressuresystem(36to38psig(250to260kPa))
•Controlsfuelpump,fuelinjector,andoillamp
•Automaticaltitudecompensation
•Flow:16Lperhourminimum@12-volts/36psig(250kPa)
•Currentdraw:2-ampsmaximum
•ThrottleBodyBore:31mmdiameter
•Open-loopsystem(i.e.oxygensensornotused)
•SeparateEFIwireharness
•Fail-safefunction
2019PrecedentVillager2MaintenanceandServiceManualPage21-1
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